What is CVE-2026-34446?

CVE-2026-34446 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. ONNX: Arbitrary File Read via ExternalData Hardlink Bypass in ONNX load

Which CVE IDs does CVE-2026-34446 cover?

CVE-2026-34446 covers the following CVE IDs: CVE-2026-34446. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-34446?

CVE-2026-34446 has a CVSS v3 base score of 4.7, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-34446?

CVE-2026-34446 affects 4 products, including: azl3 pytorch 2.2.2-12 on Azure Linux 3.0; cbl2 pytorch 2.0.0-15; cbl2 pytorch 2.0.0-15 on CBL Mariner 2.0; cbl2 pytorch 2.0.0-15 on CBL-Mariner 2.0.

CVE-2026-34446MediumCVSS 4.7

ONNX: Arbitrary File Read via ExternalData Hardlink Bypass in ONNX load

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-34446 →

🎯 Affected products4

azl3 pytorch 2.2.2-12 on Azure Linux 3.0
cbl2 pytorch 2.0.0-15
cbl2 pytorch 2.0.0-15 on CBL Mariner 2.0
cbl2 pytorch 2.0.0-15 on CBL-Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 2.2.2-14 KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34446
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade